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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| 'use strict'; | ||
| const { | ||
| ArrayPrototypeJoin, | ||
| ArrayPrototypeMap, | ||
| ArrayPrototypePushApply, | ||
| ArrayPrototypeReduce, | ||
| ArrayPrototypeSlice, | ||
| ArrayPrototypeSome, | ||
| StringPrototypeSplit, | ||
| StringPrototypeStartsWith, | ||
| } = primordials; | ||
| const { | ||
| prepareMainThreadExecution, | ||
| markBootstrapComplete | ||
| } = require('internal/process/pre_execution'); | ||
| const { getOptionValue } = require('internal/options'); | ||
| const { green, blue, red, white } = require('internal/util/colors'); | ||
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|
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| const { spawn } = require('child_process'); | ||
| const { watch } = require('fs/promises'); | ||
| const { inspect } = require('util'); | ||
| const { setTimeout, clearTimeout } = require('timers'); | ||
| const { dirname, sep, resolve } = require('path'); | ||
| const { once } = require('events'); | ||
|
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|
|
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| prepareMainThreadExecution(false); | ||
| markBootstrapComplete(); | ||
|
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| // TODO(MoLow): Make kill signal configurable | ||
| const kKillSignal = 'SIGTERM'; | ||
| const kWatchedPaths = ArrayPrototypeMap(getOptionValue('--watch-path'), (path) => resolve(path)); | ||
| const kCommand = ArrayPrototypeSlice(process.argv, 1); | ||
| const kCommandStr = inspect(ArrayPrototypeJoin(kCommand, ' ')); | ||
| const args = ArrayPrototypeReduce(process.execArgv, (acc, flag, i, arr) => { | ||
| if (arr[i] !== '--watch-path' && arr[i - 1] !== '--watch-path' && arr[i] !== '--watch') { | ||
| acc.push(arr[i]); | ||
| } | ||
| return acc; | ||
| }, []); | ||
| ArrayPrototypePushApply(args, kCommand); | ||
|
|
||
| function isWatchedFile(filename) { | ||
| if (kWatchedPaths.length > 0) { | ||
| return ArrayPrototypeSome(kWatchedPaths, (path) => StringPrototypeStartsWith(filename, path)); | ||
| } | ||
|
|
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| const directory = dirname(filename); | ||
| if (directory === '.') { | ||
| return true; | ||
| } | ||
|
|
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| const dirs = StringPrototypeSplit(directory, sep); | ||
| return !ArrayPrototypeSome(dirs, (dir) => dir[0] === '.' || dir === 'node_modules'); | ||
| } | ||
|
|
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| function debounce(fn, duration = 100) { | ||
| let timeout; | ||
| return () => { | ||
| if (timeout) { | ||
| clearTimeout(timeout); | ||
| } | ||
|
|
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| timeout = setTimeout(fn, duration).unref(); | ||
| }; | ||
| } | ||
|
|
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| function exitHandler(code) { | ||
| if (code === 0) { | ||
| process.stdout.write(`${blue}Completed running ${kCommandStr}${white}\n`); | ||
| } else { | ||
| process.stdout.write(`${red}Failed running ${kCommandStr}${white}\n`); | ||
| } | ||
| } | ||
|
|
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| let graceTimer; | ||
| function reportGracefulTermination() { | ||
| let reported = false; | ||
| clearTimeout(graceTimer); | ||
| graceTimer = setTimeout(() => { | ||
| reported = true; | ||
| process.stdout.write(`${blue}Waiting for graceful termination${white}\n`); | ||
| }, 1000).unref(); | ||
| return () => { | ||
| clearTimeout(graceTimer); | ||
| if (reported) { | ||
| process.stdout.write(`${green}gracefully terminated${white}\n`); | ||
| } | ||
| }; | ||
| } | ||
|
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|
|
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| let childProcess; | ||
| async function run(restarting) { | ||
| if (restarting) { | ||
| process.stdout.write('\u001Bc'); | ||
| process.stdout.write(`${green}Restarting ${kCommandStr}${white}\n`); | ||
| } | ||
| if (childProcess && !childProcess.killed) { | ||
| childProcess.removeListener('exit', exitHandler); | ||
| const onExit = once(childProcess, 'exit'); | ||
| const clearGraceReport = reportGracefulTermination(); | ||
| childProcess.kill(kKillSignal); | ||
| await onExit; | ||
| clearGraceReport(); | ||
| } | ||
|
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| childProcess = spawn(process.execPath, args, { stdio: ['inherit', 'inherit', 'inherit'] }); | ||
| childProcess.once('exit', exitHandler); | ||
| } | ||
|
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| const restart = debounce(() => run(true)); | ||
|
|
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| (async () => { | ||
| run(); | ||
| const watcher = watch(process.cwd(), { recursive: true }); | ||
| for await (const event of watcher) { | ||
| if (isWatchedFile(resolve(event.filename))) { | ||
| restart(); | ||
| } | ||
| } | ||
| })(); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| 'use strict'; | ||
|
|
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| module.exports = { | ||
| blue: '', | ||
| green: '', | ||
| white: '', | ||
| red: '', | ||
| refresh() { | ||
| if (process.stderr.isTTY && process.stderr.hasColors()) { | ||
| module.exports.blue = '\u001b[34m'; | ||
| module.exports.green = '\u001b[32m'; | ||
| module.exports.white = '\u001b[39m'; | ||
| module.exports.red = '\u001b[31m'; | ||
| } | ||
| } | ||
| }; | ||
|
|
||
| module.exports.refresh(); |
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